Psychrophilic hydrogen production from petrochemical wastewater via anaerobic sequencing batch reactor: techno-economic assessment and kinetic modelling
Psychrophilic hydrogen production from petrochemical wastewater via anaerobic sequencing batch reactor: techno-economic assessment and kinetic modelling
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DOI：
10.1016/j.ijhydene.2018.09.091
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发表时间：
2019-02-26
影响因子：
7.2
通讯作者：
Tawfik, Ahmed
中科院分区：
文献类型：
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作者：
Elreedy, Ahmed;Fujii, Manabu;Tawfik, Ahmed
在15-25 ℃的低温条件下，对厌氧序批式反应器（ASBR）处理含乙二醇（MEG）的石化废水进行了独立产氢的研究。实验室规模的ASBR在pH为5.50，有机负荷分别为1.00、1.67、2.67和4.00 gCOD/L/d的条件下运行。当OLR从1.00增加到4.00 gCOD/L/d时，氢气产率（HY）从134.32 +/- 10.79增加到189.09 +/- 22.35 mL/gMEG（初始）。在OLR为4.0 gCOD/L/d时，氢含量达到最大值47.44 +/- 3.60%，而甲烷含量保持较低（在OLR为1.0 gCOD/L/d时为17.76 +/- 1.27%）。动力学研究使用四种不同的数学模型进行描述ASBR的性能。此外，进行了两个分批模式实验，以优化作为营养物的氮补充（C/N比），并评估盐度（gNaCl/L）对产氢的影响。当C/N比从28.5增加到114.0时，HY从62.77 +/- 4.09显著下降到6.02 +/- 0.39 mL/gMEG（初始）。此外，盐度在10.0 gNaCl/L以下对产氢的抑制作用相对较弱。最后，成本/效益分析表明，环境和能源回收收入ASBR优化OLR为4.0 gCOD/L/d（投资回收期为7.13年）。(C)2018年氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
Independent hydrogen production from petrochemical wastewater containing mono ethylene glycol (MEG) via anaerobic sequencing batch reactor (ASBR) was extensively assessed under psychrophilic conditions (15-25 degrees C). A lab-scale ASBR was operated at pH of 5.50, and different organic loading rates (OLR) of 1.00, 1.67, 2.67, and 4.00 gCOD/L/d. The hydrogen yield (HY) progressed from 134.32 +/- 10.79 to 189.09 +/- 22.35 mL/gMEG(initial) at increasing OLR from 1.00 to 4.00 gCOD/L/d. The maximum hydrogen content of 47.44 +/- 3.60% was achieved at OLR of 4.0 gCOD/L/d, while methane content remained low (17.76 +/- 1.27% at OLR of 1.0 gCOD/L/d). Kinetic studies using four different mathematical models were conducted to describe the ASBR performance. Furthermore, two batch-mode experiments were performed to optimize the nitrogen supplementation as a nutrient (C/N ratio), and assess the impact of salinity (as gNaCl/L) on hydrogen production. HY substantially dropped from 62.77 +/- 4.09 to 6.02 +/- 0.39 mL/gMEG(initial) when C/N ratio was increased from 28.5 to 114.0. Besides, the results revealed that salinity up to 10.0 gNaCl/L has a relatively low inhibitory impact on hydrogen production. Eventually, the cost/benefit analysis showed that environmental and energy recovery revenues from ASBR were optimized at OLR of 4.0 gCOD/L/d (payback period of 7.13 yrs). (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.